Battery charger with a retractable extension cable



FIG. 1 is a front elevational view of the battery charger with a retractable extension cable showing my new design;

FIG. 2 is a rear elevational view thereof;

FIG. 3 is a left side elevational view of the battery charger with a retractable extension cord shown on a reduced scale;

FIG. 4 is a right side elevational view thereof;

FIG. 5 is a top plan view thereof shown on a slightly enlarged scale; and,

FIG. 6 is a bottom plan view thereof. 

The ornamental design for a battery charger with a retractable extension cable, as shown and described. 